code: def __init__(self, reason, filename=None):
      self.args = (reason,)
      self.reason = reason
      if filename is not None:
          self.filename = filename
  
file_path: cpython/Lib/urllib/error.py
imports: import io
  import urllib.response
label_desc: Use image node_id 1 to create a new URLError object from inherited base classes: OSError with example: obj = URLError(reason, filename)